Pneumatic lifting platform frame

Abstract

The pneumatic lifting platform frame comprises a pneumatic driving assembly, a left lifting assembly, a right lifting assembly, a connecting arm and a platform, the left lifting assembly and the right lifting assembly are symmetrically arranged, and each of the left lifting assembly and the right lifting assembly comprises a supporting leg and a cylinder body. The two ends of the platform are fixedly installed on the opposite sides of the two cylinder bodies respectively, the supporting legs are provided with inner rods, the inner rods are sleeved with the cylinder bodies, the cylinder bodies can slide relative to the inner rods, and the pneumatic driving assembly is arranged outside one of the left lifting assembly and the right lifting assembly and drives the two cylinder bodies and the inner rods to slide relative to each other, so that the platform is driven to ascend and descend. The two ends of the connecting arm are fixedly connected between the two supporting legs; the two opposite ends of the supporting legs extend in the direction perpendicular to the length direction of the platform. The height of the pneumatic lifting platform frame can be adjusted, and the pneumatic lifting platform frame is simple in structure, convenient to control and safe and reliable to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to lifting platform technical field especially relates to a pneumatic lifting platform frame. BACKGROUND

[0002] The lifting platform can be applied to indoor decoration, outdoor construction, orchard picking and the like.

[0003] Nowadays, the height-adjustable lifting platform appears on the market, most of which adopt electric push rod to push the platform to ascend or descend, and some others adopt the scissor type deformation lifting or the motor-driven chain lifting. Although these lifting platforms can also achieve the purpose of height adjustment, the pure mechanical swing or deformation is used to achieve the purpose of lifting, and the mechanical structure is very complex, and the control of the speed or the number of revolutions of the motor needs to be accurately operated, which is very inconvenient to control, and the safety and reliability still need to be improved.

[0004] Therefore, a height-adjustable pneumatic lifting platform frame with simple structure, convenient control, safe and reliable use is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem to provide a height-adjustable pneumatic lifting platform frame with simple structure, convenient control, safe and reliable use.

[0006] In order to solve the above technical problem, the pneumatic lifting platform frame provided by the utility model comprises a pneumatic driving assembly, a left lifting assembly, a right lifting assembly, a connecting arm and a platform, the left lifting assembly and the right lifting assembly are symmetrically arranged, the left lifting assembly and the right lifting assembly each comprise a supporting leg and a cylinder body, the two ends of the platform are fixedly installed on the opposite sides of the two cylinder bodies respectively, the supporting leg has an inner rod, the cylinder body is sleeved on the inner rod and can slide relative to the inner rod, the pneumatic driving assembly is arranged outside one of the cylinder bodies of the left lifting assembly and the right lifting assembly, and drives the relative sliding between the two cylinder bodies and the inner rod, thereby driving the platform to ascend and descend; the two ends of the connecting arm are fixedly connected between the two supporting legs; the opposite ends of the supporting leg extend towards the direction perpendicular to the length of the platform.

[0007] Preferably, the pneumatic driving assembly comprises a first air valve, an air inlet pipe and a first air pipe, the first air valve is installed outside the cylinder body, the air inlet pipe is connected with the first air valve, one end of the first air pipe is connected with the first air valve, one output end of the first air pipe is connected with the cylinder body of the right lifting assembly, the other output end of the first air pipe is connected with the cylinder body of the left lifting assembly, the two cylinder bodies are inflated and drive the platform on both sides to ascend by the air inlet of the air inlet pipe and the opening of the first air valve.

[0008] Preferably, the synchronous lifting pneumatic stilts further comprise a protection assembly for locking the relative position between the inner rod and the cylinder.

[0009] Specifically, the protection assembly comprises a pneumatic pressure head, a clamping rod, a second air valve and a second air pipe, the second air valve is installed outside the cylinder, the air inlet pipe is connected with the second air valve, one end of the second air pipe is connected with the second air valve, the other end of the second air pipe is connected with the pneumatic pressure head, the lower end of the clamping rod is connected with the supporting leg, the clamping rod is arranged with clamping teeth along the length direction thereof, the pneumatic pressure head has clamping blocks matched with the clamping teeth, and the clamping blocks of the pneumatic pressure head and the clamping teeth are kept in the unclamped state by the air inlet of the air inlet pipe and the opening of the second air valve.

[0010] Specifically, the clamping rod and the inner rod are the same rod or coaxial and integrally arranged. In this way, the structure is simpler.

[0011] Preferably, the platform comprises a pair of supporting members and a supporting plate, the two supporting members are respectively fixed to the cylinder on the same side thereof, and the supporting members are located on the side of the cylinder close to the other cylinder; the supporting plate is fixed to the two supporting members and located between the two cylinders.

[0012] Preferably, the supporting leg comprises a connecting table, a bearing table and a supporting arm, the connecting table is fixed to the supporting arm, and the lower end of the inner rod is connected to the connecting table; the supporting arm has a long rod structure, and the extending direction is perpendicular to the length direction of the platform; the bearing table is fixed to the side of the connecting table close to the connecting arm; and the two ends of the connecting arm are respectively fixedly connected with the bearing table.

[0013] Specifically, the supporting leg further comprises universal wheels or foot pads arranged on the bottom surface of the supporting arm.

[0014] Preferably, the first air valve is provided with a first flow regulator for adjusting the flow of gas.

[0015] Specifically, the second air valve is provided with a second flow regulator for adjusting the flow of gas.

[0016] Compared with existing technologies, this utility model combines a pneumatic drive assembly, a left lifting assembly, and a right lifting assembly. Each of the left and right lifting assemblies includes a support leg and a cylinder. The support leg has an inner rod, and the cylinder is fitted over the inner rod and can slide relative to it. The platform is installed between the two cylinders. The platform's height is adjusted by the relative sliding and lifting between the cylinder and the inner rod. The structure is very simple, and control is convenient, requiring only the inflow or outflow of gas into the cylinder. Furthermore, by extending the two ends of the support leg towards the front and rear of the platform respectively, and fixing the connecting arm between the two support legs, the connection between the two support legs is more stable, greatly improving the structural stability of the entire pneumatic lifting platform frame and ensuring reliability and safety in use. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the pneumatic lifting platform frame provided by this utility model.

[0018] Figure 2 This is a front view of the pneumatic lifting platform frame provided by this utility model.

[0019] Figure 3 A side view of the pneumatic lifting platform frame provided by this utility model.

[0020] Figure 4 for Figure 1 A magnified view of a portion of point A in the middle.

[0021] Figure 5 A bottom-view perspective view of the pneumatic lifting platform frame provided by this utility model.

[0022] Figure 6 for Figure 3 A magnified view of a section at point B. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1 to 4The utility model discloses a pneumatic lifting platform frame 100 includes pneumatic drive assembly 1, left lifting assembly 2, right lifting assembly 3, a platform 5 and a connecting arm 10, left lifting assembly 2 and right lifting assembly 3 are symmetrically set up, and left lifting assembly 2 and right lifting assembly 3 each include support foot 4 and cylinder body 6, and both ends of platform 5 are fixedly installed on the opposite side of left and right two cylinder bodies 6 respectively, and the synchronous lifting of two cylinder bodies 6 can drive platform 5 to lift, and support foot 4 has inner rod 41, and cylinder body 6 is sleeved on inner rod 41 and can slide up and down relative to inner rod 41, and cylinder body 6 has cavity structure inside, and cylinder body 6 and inner rod 41 form telescopic air cylinder structure together, and platform 5 is lifted by the relative sliding of cylinder body 6 and inner rod 41. The both ends of connecting arm 10 are fixedly connected between two support feet 4 respectively. The both ends of support foot 4 extend towards the front and rear of platform 5 respectively, and the extension direction is perpendicular to the length extension direction of connecting arm 10. Pneumatic drive assembly 1 includes first air valve 11, air inlet pipe 12 and first gas pipe 13, and first air valve 11 is installed outside cylinder body 6, air inlet pipe 12 is connected with first air valve 11, first gas pipe 13 is connected with first air valve 11, one output end of first gas pipe 13 is connected with the cylinder body 6 of right lifting assembly 3, and the other output end of first gas pipe 13 is connected with the cylinder body 6 of left lifting assembly 2, and the two cylinder bodies 6 are filled with air and drive both sides platform 5 to rise by the air inlet of air inlet pipe 12 and the opening of first air valve 11, in other words, because air inlet pipe 12 controls the inflation in the cylinder body 6 of left lifting assembly 2 and the cylinder body 6 of right lifting assembly 3 simultaneously, the air inlet of air inlet pipe 12 and the opening of first air valve 11 can realize the synchronous rise of both sides, and the closing of first air valve 11 can fix its height, when needing to descend, just open first air valve 11 again to deflate to realize the descent, not only simple structure and low cost, but also improve the convenience and safety of use. More specifically, as follows:

[0025] Please refer to Figure 3 、 Figure 5 and Figure 6The pneumatic lifting platform frame 100 further comprises a protection assembly 7 for locking the relative position between the inner rod 41 and the cylinder body 6. For example, the protection assembly 7 comprises a pneumatic pressure head 71, a clamping rod 72, a second air valve 73 and a second air pipe 74. The second air valve 73 is installed outside the cylinder body 6, the air inlet pipe 12 is connected with the second air valve 73, one end of the second air pipe 74 is connected with the second air valve 73, the other end of the second air pipe 74 is connected with the pneumatic pressure head 71, the clamping rod 72 is located on one side of the inner rod 41 and the lower end is connected with the connecting table 4a of the supporting leg 4, the clamping rod 72 is arranged with clamping teeth 721 along the length direction, the pneumatic pressure head 71 is arranged on the cylinder body 6 or the platform 5 and has a clamping block 711 matched with the clamping teeth 721. The gas in the second air pipe 74 moves along the direction away from the clamping rod 72 and makes the clamping teeth 721 and the clamping block 711 keep the unclamping state by the air inlet of the air inlet pipe 12 and the opening of the second air valve 73, or the clamping block 711 of the pneumatic pressure head 71 moves along the direction close to the clamping rod 72 and makes the clamping teeth 721 and the clamping block 711 keep the clamping state.

[0026] In the embodiment, as shown in Figure 5 and 6 , the clamping rod and the inner rod 41 are the same rod. Of course, the clamping rod and the inner rod 41 can also be coaxial and arranged integrally, that is, the clamping teeth 721 of the clamping rod are arranged on the inner rod 41, which can also achieve the same technical effect and make the structure more simple.

[0027] Please refer to Figures 1 to 5 , the platform 5 comprises a pair of supporting members 51 and a supporting plate 52, and the two supporting members 51 are respectively fixed to the cylinder bodies 6 on the same side. The supporting member 51 is located on the side of the cylinder body 6 close to the other cylinder body 6. The two ends of the supporting plate 52 are respectively fixed to the two supporting members 51 and located between the two cylinder bodies 6.

[0028] Please refer to Figures 1 to 3 , the supporting leg 4 is provided with a connecting table 4a, a bearing table 4b and a supporting arm 4c. The connecting table 4a is fixed to the supporting arm 4c, and the lower end of the inner rod 41 is connected to the connecting table 4a. The bearing table 4b is fixed to the side of the connecting table 4a close to the connecting arm 10, and the two ends of the connecting arm 10 are fixedly connected with the bearing table 4b. In this way, the platform 5 can be supported on the bearing table 4b when it is lowered to the lowest position, so that the stress is more stable. The supporting arm 4c has a long rod structure and extends in the front and rear directions of the platform 5, that is, the two ends of the supporting arm 4c respectively extend in the length direction perpendicular to the connecting arm 10 or the platform 5, so that the whole pneumatic lifting platform frame 100 can stand stably and effectively prevent from falling, greatly enhancing the stability and safety.

[0029] Please refer to Figures 1 to 3 The support leg 4 further comprises universal wheels 4d arranged at the front and rear ends of the bottom surface of the support arm 4c, so that the entire pneumatic lifting platform frame 100 can be more conveniently moved. Alternatively, the bottom surface of the support arm 4c can be fixedly provided with a foot pad, so that the support leg 4 can be more stably supported, slippage is prevented, and stability and safety are further enhanced.

[0030] Please refer to Figure 4 The first gas valve 11 is provided with a first flow regulator 8 for adjusting the flow of gas, and the user can adjust the lifting speed as needed. The second gas valve 73 is provided with a second flow regulator 9 for adjusting the flow of gas, and the user can adjust the speed of the second gas valve 73 according to actual needs. Of course, the manufacturer can delete the first flow regulator 8 or the second flow regulator 9 according to actual needs.

[0031] Please refer to Figures 1 to 6 The working process of the pneumatic lifting platform frame 100 of the utility model is as follows:

[0032] 1. After the external air compressor is started, the free end of the air inlet pipe 12 is inserted into the air outlet of the air compressor, and a person stands on the platform 5.

[0033] 2. The first gas valve 11 is pulled, high gas pressure enters the cylinder body 6, the inner rod 41 extends relative to the cylinder body 6, and the platform 5 starts to rise. At the same time, when the air inlet pipe 12 is in the air inlet state, the gas in the second air pipe 74 moves away from the inner rod 41 by the air inlet of the air inlet pipe 12 and the opening of the second gas valve 73, and the clamping teeth 721 and the clamping block 711 are kept in the unclamped state. The second gas valve 73 is a one-way valve, and the self-locking small cylinder formed at the pneumatic pressure head 71 is automatically closed after being filled with gas.

[0034] 3. When the lifting height reaches the desired height, the first gas valve 11 is pulled, the cylinder body 6 is closed, the self-locking small cylinder 6 is exhausted, the clamping block 711 of the pneumatic pressure head 71 moves towards the inner rod 41, and the clamping teeth 721 and the clamping block 711 are kept in the clamped state, so as to realize locking.

[0035] 4. The first gas valve 11 is pulled, the gas in the cylinder body 6 is exhausted through the first gas valve 11, and the platform 5 starts to descend. After descending to the desired height, the first gas valve 11 is closed and the exhaust is stopped, and the platform 5 stops at the current height.

[0036] 5. When the lifting or descending speed is too fast, the flow limiting knob of the first flow regulator 8 is adjusted, and the speed is adjusted to be appropriate.

[0037] By combining the pneumatic driving assembly 1, the left lifting assembly 2 and the right lifting assembly 3 together, the left lifting assembly 2 and the right lifting assembly 3 each comprise a supporting leg 4 with an inner rod 41 and a cylinder body 6 sleeved on the inner rod 41 and slidable relative to the inner rod 41, and a platform 5 is installed between the two cylinder bodies 6, and the platform 5 is lifted and lowered in linkage with the relative sliding between the cylinder bodies 6 and the inner rod 41, so that the height of the platform 5 is adjusted, and the structure is very simple. In addition, the pneumatic driving assembly 1 comprises a first air valve 11, an air inlet pipe 12 and a first air pipe 13, the first air valve 11 is installed outside the cylinder body 6, the air inlet pipe 12 is connected with the first air valve 11, one end of the first air pipe 13 is connected with the first air valve 11, an output end of the first air pipe 13 is connected with the cylinder body 6 of the right lifting assembly 3, and the other output end of the first air pipe 13 is connected with the cylinder body 6 of the left lifting assembly 2, and the two cylinder bodies 6 are filled with air and drive the platform 5 to rise by air inlet of the air inlet pipe 12 and opening of the first air valve 11, in other words, since the air inlet pipe 12 controls the cylinder body 6 of the left lifting assembly 2 and the cylinder body 6 of the right lifting assembly 3 at the same time, air inlet of the air inlet pipe 12 and opening of the first air valve 11 can realize synchronous rising of the two sides, and closing of the first air valve 11 can fix the height, and when it is needed to descend, only the first air valve 11 is opened again to release air, so that the descending can be realized, which not only has a simple structure, but also is convenient to control and has a low cost, improves the convenience and safety in use. In addition, by fixing and connecting the connecting arm 10 between the supporting legs 4, the connection of the two supporting legs 4 is more stable, the structural stability of the whole pneumatic lifting platform frame 100 is greatly improved, and the reliability and safety in use are ensured.

[0038] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A pneumatic lifting platform frame, characterized in that: The system includes a pneumatic drive assembly, a left lifting assembly, a right lifting assembly, a connecting arm, and a platform. The left and right lifting assemblies are symmetrically arranged, each including a support leg and a cylinder. The two ends of the platform are fixedly mounted on opposite sides of the two cylinders. Each support leg has an inner rod, and the cylinder is sleeved on the inner rod and can slide relative to it. The pneumatic drive assembly is disposed outside one of the cylinders of the left and right lifting assemblies and drives the two cylinders to slide relative to the inner rod, thereby raising and lowering the platform. The two ends of the connecting arm are fixedly connected between the two support legs. The opposite ends of the support legs extend in a direction perpendicular to the length of the platform.

2. The pneumatic lifting platform frame according to claim 1, characterized in that, The pneumatic drive assembly includes a first air valve, an air intake pipe, and a first air pipe. The first air valve is installed outside the cylinder body. The air intake pipe is connected to the first air valve. The first air pipe is also connected to the first air valve. One output end of the first air pipe is connected to the cylinder body of the right lifting assembly, and the other output end of the first air pipe is connected to the cylinder body of the left lifting assembly. By the intake of air through the air intake pipe and the opening of the first air valve, air is filled into both cylinder bodies, which drives the platform to rise.

3. The pneumatic lifting platform frame according to claim 2, characterized in that, It also includes a protective component for locking the relative position between the inner rod and the cylinder.

4. The pneumatic lifting platform frame according to claim 3, characterized in that, The protection assembly includes a pneumatic pressure head, a locking lever, a second air valve, and a second air pipe. The second air valve is installed outside the cylinder body. The air intake pipe is connected to the second air valve. One end of the second air pipe is connected to the second air valve, and the other end of the second air pipe is connected to the pneumatic pressure head. The lower end of the locking lever is connected to the support foot. The locking lever has locking teeth arranged along its length. The pneumatic pressure head has a locking block that cooperates with the locking teeth. By the air intake of the air intake pipe and the opening of the second air valve, the locking block of the pneumatic pressure head is kept in a disengaged state from the locking teeth.

5. The pneumatic lifting platform frame according to claim 4, characterized in that, The card-mounting rod and the inner rod are the same rod or are coaxial and integrally formed.

6. The pneumatic lifting platform frame according to claim 1, characterized in that, The platform includes a pair of support members and a support plate. The two support members are respectively fixed to the cylinder on the same side of the cylinder. The support members are located on the side of the cylinder that is closer to the other cylinder. The support plate is fixed to the two support members and located between the two cylinders.

7. The pneumatic lifting platform frame according to claim 1, characterized in that, The support leg includes a connecting platform, a bearing platform, and a support arm. The connecting platform is fixed to the support arm, and the lower end of the inner rod is connected to the connecting platform. The support arm has a long rod-shaped structure, extending in a direction perpendicular to the length of the platform. The bearing platform is fixed to the side of the connecting platform near the connecting arm. Both ends of the connecting arm are fixedly connected to the bearing platform.

8. The pneumatic lifting platform frame according to claim 7, characterized in that, The support foot also includes casters or foot pads disposed on the bottom surface of the support arm.

9. The pneumatic lifting platform frame according to claim 2, characterized in that, The first gas valve is equipped with a first flow regulator for adjusting the gas flow rate.

10. The pneumatic lifting platform frame according to claim 4, characterized in that, The second gas valve is equipped with a second flow regulator for adjusting the gas flow rate.

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